I am retrofitting my compact 5 to Mach3 and want to use the exisitng spindle motor driver board. I need assistance locating the connections to the board for the variable drive signal input from the computer board. There may have been a latching relay that toggled between manual control via the pot on the board and the input signals from the computer when the selection switch was turned to cnc mode. Does anyone have a schematic for the driver board?
I have surplus working boards for the computer, tool changer, video, rs232.